When same quantity of electricity is passed for half an hour the amount of Cu and Cr deposited are respectively 0.375 g and 0.30 g ratio of electrochemical equivalent of cu nd cr is

Options

A. 0.8
B. 1.25
C. 2.5
D. 1.62

Answer

B

Explanation

`(w_(1))/(w_(2))=(E_(1))/(E_(2))=(Z_(1))/(z_(2))rarr (0.375)/(0.3)=(Z_(1))/(Z_(2))=1.25`